#app {

  // 头部版块
  .header {
    height: 5.21vw;
    background-color: #000;

    .wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 0 auto;
      height: 100%;
      width: 62.50vw;

      .left {
        .logo {
          width: 10.42vw;
        }
      }

      .right {
        .nav {
          display: flex;

          .nav-item {
            margin-left: 2.34vw;
            padding: 0.31vw 0.63vw;
            border-radius: 0.42vw;
            // font-weight: bold;
            cursor: pointer;

            a {
              color: #fff;
            }

            &.active {
              background-color: #fff;
              font-weight: bold;

              a {
                color: #000;
              }
            }

            &:hover {
              background-color: #fff;
              font-weight: bold;

              a {
                color: #000;
              }
            }
          }
        }
      }

      .collapse {
        display: none;
      }
    }
  }

  // 横幅版块
  .banner {
    height: 26.04vw;
    background-image: url(../images/bigbg.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    color: #fff;

    .content {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);

      .title {
        margin-bottom: 2.08vw;
        font-size: 3.44vw;
        font-weight: bold;
      }

      .slogan {
        font-size: 0.63vw;
      }
    }
  }

  // 关于我们版块
  .about-us {
    padding-top: 2.08vw;

    .wrapper {
      margin: 0 auto;
      width: 62.50vw;

      >.title {
        position: relative;
        font-size: 1.25vw;
        font-weight: bold;
        text-align: center;

        &::after {
          content: "";
          position: absolute;
          bottom: -1.04vw;
          left: 50%;
          transform: translateX(-50%);
          width: 5.21vw;
          height: 0.10vw;
          background-color: black;
        }
      }

      >.content {
        margin-top: 2.60vw;

        .about-item {
          display: flex;
          align-items: center;
          margin-bottom: 1.04vw;

          img {
            width: 18.23vw;
          }

          >div {
            padding: 0 4.17vw 0 1.56vw;
          }

          .title {
            margin-bottom: 1.30vw;
            font-size: 0.94vw;
            font-weight: bold;
          }

          .content {
            font-size: 0.63vw;
          }
        }
      }
    }
  }

  // 尾部版块
  .footer {
    background-color: #ededed;

    .wrapper {
      margin: 0 auto;
      padding: 2.60vw 0;
      width: 62.50vw;

      >.title {
        position: relative;
        font-size: 1.25vw;
        font-weight: bold;
        text-align: center;

        &::after {
          content: "";
          position: absolute;
          bottom: -1.04vw;
          left: 50%;
          transform: translateX(-50%);
          width: 5.21vw;
          height: 0.10vw;
          background-color: black;
        }
      }

      >.content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 2.60vw;

        .left {
          display: flex;
          align-items: center;

          .qrcodes {
            display: flex;
            align-items: center;

            .qrcodes-item {
              margin-right: 0.78vw;

              img {
                width: 6.25vw;
              }

              div {
                margin-top: 0.52vw;
                font-size: 0.63vw;
                text-align: center;
              }
            }
          }

          .links {
            align-self: flex-start;

            .links-item {
              margin: 0.73vw 0;
              font-size: 0.63vw;
            }
          }
        }

        .phone {
          i {
            font-size: 2.08vw;
          }

          span {
            font-size: 1.67vw;
          }
        }
      }
    }
  }

  // 版权版块
  .copyright {
    background-color: black;

    .wrapper {
      margin: 0 auto;
      padding: 1.04vw 0;
      width: 62.50vw;
      font-size: 0.63vw;
      color: white;
      text-align: center;
    }
  }

  @media screen and (max-width: 767px) {

    // 头部版块
    .header {
      height: 100px;

      .wrapper {

        .left {
          .logo {
            min-width: 100px;
          }
        }

        .right {
          display: none;
        }

        .collapse {
          display: block;
          position: relative;

          .iconfont {
            border-radius: 4px;
            color: white;
            font-size: 20px;
          }

          .nav {
            transition: all 0.5s;
            opacity: 0;
            position: absolute;
            top: 30px;
            right: 0;
            display: flex;
            flex-direction: column;
            padding: 10px 20px;
            background-color: rgba(0, 0, 0, 0.5);

            .nav-item {
              padding: 0.31vw 0.63vw;
              margin-bottom: 10px;
              width: 100px;
              border-radius: 0.42vw;
              text-align: center;
              cursor: pointer;

              a {
                font-size: 16px;
                color: #fff;
              }

              &.active {
                background-color: #fff;
                font-weight: bold;

                a {
                  color: #000;
                }
              }

              &:hover {
                background-color: #fff;
                font-weight: bold;

                a {
                  color: #000;
                }
              }
            }
          }
        }
      }
    }

    // 横幅版块
    .banner {
      height: 500px;

      .content {

        .title {
          margin-bottom: 40px;
          font-size: 38px;
        }

        .slogan {
          font-size: 12px;
          text-align: center;
        }
      }
    }

    // 关于我们版块
    .about-us {
      padding-top: 40px;

      .wrapper {

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          margin-top: 50px;

          .about-item {
            flex-direction: column;
            margin-bottom: 20px;

            img {
              width: 100%;
            }

            >div {
              padding: 0;
            }

            .title {
              margin: 25px 0;
              font-size: 18px;
            }

            .content {
              font-size: 12px;
            }
          }
        }
      }
    }

    // 尾部版块
    .footer {

      .wrapper {
        padding: 50px 0;

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          flex-direction: column;
          margin-top: 50px;

          .left {
            flex-direction: column;

            .qrcodes {
              flex-direction: column;

              .qrcodes-item {
                margin-right: 0;
                margin-bottom: 10px;

                img {
                  width: 120px;
                }

                div {
                  margin-top: 10px;
                  font-size: 12px;
                }
              }
            }

            .links {

              .links-item {
                margin: 14px 0;
                font-size: 12px;
              }
            }
          }

          .phone {
            display: flex;
            align-items: center;
            flex-direction: column;

            i {
              font-size: 40px;
            }

            span {
              font-size: 32px;
            }
          }
        }
      }
    }

    // 版权版块
    .copyright {

      .wrapper {
        padding: 20px 0;
        font-size: 12px;
      }
    }
  }

  @media screen and (min-width: 768px) and (max-width: 991px) {

    // 头部版块
    .header {
      height: 100px;

      .wrapper {

        .left {
          .logo {
            width: 115px;
          }
        }

        .right {
          .nav {

            .nav-item {
              padding: 6px 12px;
              border-radius: 8px;

              a {
                font-size: 14px;
              }
            }
          }
        }
      }
    }

    // 横幅版块
    .banner {
      height: 500px;

      .content {

        .title {
          margin-bottom: 40px;
          font-size: 66px;
        }

        .slogan {
          font-size: 12px;
          text-align: center;
        }
      }
    }

    // 关于我们版块
    .about-us {
      padding-top: 40px;

      .wrapper {

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          margin-top: 50px;

          .about-item {
            flex-direction: column;
            margin-bottom: 40px;

            img {
              margin-bottom: 20px;
              width: 350px;
            }

            >div {
              padding: 0;
            }

            .title {
              font-size: 18px;
            }

            .content {
              font-size: 12px;
            }
          }
        }
      }
    }

    // 尾部版块
    .footer {

      .wrapper {
        padding: 50px 0;

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          flex-direction: column;
          margin-top: 50px;

          .left {
            margin-bottom: 30px;

            .qrcodes {

              .qrcodes-item {
                margin-right: 15px;

                img {
                  width: 120px;
                }

                div {
                  margin-top: 10px;
                  font-size: 12px;
                }
              }
            }

            .links {

              .links-item {
                margin: 14px 0;
                font-size: 12px;
              }
            }
          }

          .phone {
            i {
              font-size: 40px;
            }

            span {
              font-size: 32px;
            }
          }
        }
      }
    }

    // 版权版块
    .copyright {

      .wrapper {
        padding: 20px 0;
        font-size: 12px;
      }
    }
  }

  @media screen and (min-width: 992px) and (max-width: 1920px) {

    // 头部版块
    .header {
      height: 100px;

      .wrapper {
        .left {
          .logo {
            width: 200px;
          }
        }

        .right {
          .nav {
            .nav-item {
              padding: 6px 12px;
              border-radius: 8px;

              a {
                font-size: 14px;
              }
            }
          }
        }
      }
    }

    // 横幅版块
    .banner {
      height: 500px;

      .content {

        .title {
          margin-bottom: 40px;
          font-size: 66px;
        }

        .slogan {
          font-size: 12px;
        }
      }
    }

    // 关于我们版块
    .about-us {
      padding-top: 40px;

      .wrapper {

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          margin-top: 50px;

          .about-item {
            margin-bottom: 20px;

            img {
              min-width: 300px;
            }

            .title {
              margin-bottom: 25px;
              font-size: 18px;
            }

            .content {
              font-size: 12px;
            }
          }
        }
      }
    }

    // 尾部版块
    .footer {

      .wrapper {
        padding: 50px 0;

        >.title {
          font-size: 24px;

          &::after {
            bottom: -20px;
            width: 100px;
            height: 2px;
          }
        }

        >.content {
          margin-top: 50px;

          .left {

            .qrcodes {

              .qrcodes-item {
                margin-right: 15px;

                img {
                  width: 120px;
                }

                div {
                  margin-top: 10px;
                  font-size: 12px;
                }
              }
            }

            .links {

              .links-item {
                margin: 14px 0;
                font-size: 12px;
              }
            }
          }
        }
      }
    }

    // 版权版块
    .copyright {

      .wrapper {
        padding: 20px 0;
        font-size: 12px;
      }
    }
  }
}